CN204730703U - Two-tube-pass coil pipe heat exchanger - Google Patents

Abstract

The utility model relates to a kind of two-tube-pass coil pipe heat exchanger, comprise shell-side cylinder, left pipe box and right pipe box, both sides, described shell-side cylinder top are respectively equipped with shell side adapter, described shell-side cylinder two ends are respectively arranged with left tube sheet and trough of belt right tube plate, fixedly be equipped with to coil between described left tube sheet and trough of belt right tube plate and restrain, described coiling tube bank two ends are connected with right pipe box with left pipe box respectively; Be horizontally set with the dividing plate its inner chamber being separated into upper and lower two cavitys in described right pipe box, the septalium on described dividing plate and trough of belt right tube plate is sealed and matched, and described right pipe box top is provided with tube side upper connecting tube, and described right pipe box bottom is provided with tube side lower linking tube.The utility model is applicable to that user installation place is limited, tube side imports and exports the occasion that status requirement is arranged in the same side or needs to lengthen tube side flow process, uses two-tube-pass coil pipe heat exchanger of the present utility model to play to improve the effects such as heat exchanger effectiveness, energy-saving and cost-reducing, handled easily maintenance.

Description

Double-pass coiled tube heat exchanger

technical field

The utility model relates to a heat exchanger, in particular to a double-tube coiled tube heat exchanger.

Background technique

In the application of the coiled tube heat exchanger, due to the limitation of the location of the site or the location of the medium inlet and outlet, the user needs to use a double-tube coiled tube in order to improve the heat exchange efficiency of the heat exchanger, save energy and reduce consumption, and facilitate operation and maintenance. Heat Exchanger. In the existing coiled tube heat exchanger, due to the helical winding of the heat exchange tubes, the heat exchange tubes of each layer are arranged in concentric circles, which restricts the realization of the double tube pass coiled tube heat exchanger.

Utility model content

In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a double-tube-side coiled tube heat exchanger with novel design, reasonable structure and convenient use to meet the working conditions of users.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a double-tube-side coiled tube heat exchanger, including a shell-side cylinder, a left tube box and a right tube box, and the upper two sides of the shell-side cylinder are respectively equipped with Shell-side connection, the two ends of the shell-side cylinder are respectively provided with a left tube plate and a right tube plate with grooves, and a coiled tube bundle coiled on the outside of the core tube is fixedly pierced between the left tube plate and the right tube plate with grooves , the two ends of the coiled tube bundle are respectively connected with the left tube box and the right tube box; the left tube box is provided with a flange that is sealed and connected The bolt is connected to the flange of the right tube plate with grooves; the right tube box is horizontally provided with a partition that divides its inner cavity into two cavities, the partition and the partition on the right tube plate with grooves The plate groove is sealed and matched, the upper part of the right pipe box is provided with the upper pipe connection, and the lower part of the right pipe box is provided with the lower pipe connection.

Further, the number of heat exchange tube holes on the right tube plate with grooves is equally distributed on the upper and lower sides of the partition groove, and the positions of the tube holes on the left tube plate are arranged in the same way as the tube holes on the right tube plate with grooves. Similarly, the left tube plate does not have a bulkhead groove.

Further, a sealing gasket is provided between the flange of the left tube box and the sealing surface of the left tube plate, and a spacer with an intermediate spacer is provided between the flange of the right tube box and the sealing surface of the right tube plate with grooves. Gasket.

Further, both the left tube box and the right tube box also include a tube pass cylinder and a tube pass head.

Further, the lower part of the shell-side cylinder is also provided with a sewage discharge pipe.

Compared with the prior art, the utility model has the following beneficial effects: the double-tube coiled tube heat exchanger is suitable for occasions where the installation site of the user is limited, the position of the inlet and outlet of the tubes is required to be arranged on the same side, or the process flow of the tubes needs to be lengthened , Using the double-tube-side coiled tube heat exchanger of the utility model can improve heat exchange efficiency, save energy and reduce consumption, and facilitate operation and maintenance.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a sectional view taken along line A-A in Fig. 1 .

In the figure: 1- left tube box; 2- left tube plate; 3- shell side connection; 4- shell side cylinder; 5- coiled tube bundle; 6- fastening bolt; 7- right tube box; 71- tube side Takeover; 72-partition; 73-under the tube; 8-right tube plate with groove; 9-sealing gasket with middle spacer; 10-core tube; 11-drainage pipe;

Detailed ways

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific examples are given together with the accompanying drawings and described in detail as follows.

As shown in Figures 1 and 2, a double-tube-side coiled tube heat exchanger includes a shell-side cylinder 4, a left tube box 1 and a right tube box 7, and shell-side tubes are arranged on both sides of the upper part of the shell-side tube 4. Connecting pipe 3, the two ends of the shell-side cylinder 4 are respectively provided with a left tube plate 2 and a right tube plate 8 with grooves, and a coiled tube plate is fixed between the left tube plate 2 and the right tube plate 8 with grooves. 10 the outer coiled tube bundle 5, the two ends of the coiled tube bundle 5 are respectively connected with the left tube box 1 and the right tube box 7; Lan, the right tube box 7 is provided with a flange that is sealed and connected to the right tube plate 8 with grooves through the fastening bolt 6; the right tube box 7 is provided with a horizontal wall that divides its inner cavity into two independent cavities, the upper and the lower. The partition 72, the partition 72 is sealed with the partition groove 12 on the grooved right tube plate 8, the upper part of the right tube box 7 is provided with a tube side connecting pipe 71, and the lower part of the right tube box 7 is provided with Take over the pipe 73 under the tube pass.

In the embodiment of the present invention, the right end of the core tube 10 may be fixed on the right tube plate 8 with grooves, but it is not limited thereto. The number of tube holes of the heat exchange tubes on the right tube plate 8 with grooves is equally distributed on the upper and lower sides of the partition groove 12, and the position of the tube holes on the left tube plate 2 is the same as the tube holes on the right tube plate 8 with grooves. The arrangement is the same, the left tube plate 2 does not have a bulkhead groove 12 . The above-mentioned tube sheet comprehensively considers factors such as the number of tubes, pitch, number of turns, tube spacing, etc., to ensure that the original continuous and uniform spacing between the coiled tubes is maintained, and a partition slot is arranged in the tube hole area of the partition slot 12 The position of 12, thus realizes the dual tube pass through the partition 72.

In this utility model embodiment, a sealing gasket is provided between the flange of the left tube box 1 and the sealing surface of the left tube plate 2, and the flange of the right tube box 7 is connected to the sealing surface of the right tube plate 8 with grooves. (including the bottom surface of the partition plate groove 12) is provided with a sealing gasket 9 with an intermediate spacer. Wherein, the tube sheet and the partition plate 72 may adopt a welded structure or a fitting structure, etc.

In the embodiment of the present utility model, in order to facilitate cleaning, a sewage discharge pipe 11 is also provided at the lower part of the shell-side cylinder 4 . Both the left tube box 1 and the right tube box 7 also include a tube-side cylinder and a tube-side head. Wherein, the type of the head, the type of the connecting pipe, the number of connecting pipes, and the position of the connecting pipes are not limited to those described in the embodiment of the present invention, and can be selected according to actual working conditions.

In the embodiment of the utility model, the working principle of the double-tube-side coiled tube heat exchanger is as follows: the shell-side medium enters from the shell-side connecting pipe 3 on the upper side of the shell-side cylinder 4, and connects with the coiled tube bundle in the shell-side cylinder 4 5. After the heat exchange, it flows out from the shell-side connecting pipe 3 on the other side of the upper part of the shell-side cylinder 4; the tube-side medium enters from the tube-side lower connecting pipe 73 of the right pipe box 7, and flows through the lower cavity of the right pipe box 7 through the coil Half of the heat exchange tubes of the tube bundle 5 reach the left tube box 1, and then the tube-side medium flows from the left tube box 1 through the other half of the heat exchange tubes of the coiled tube bundle 5 to the upper cavity of the right tube box 7, and finally from the right tube box 7 The tube-side upper connection pipe 71 flows out; the heat exchange process between the shell-side medium and the tube-side medium is realized.

Due to the limitation of the location of the site, the length or height of the coiled tube heat exchanger is limited by some users. It is necessary to use double tubes to extend the length of the tube-side medium flowing through the heat exchange tubes, so as to make full use of the cold (heat) of the tube-side medium. ) energy exchange. Therefore, in the case where a double-tube-side coiled-tube heat exchanger is applicable, the use of the double-tube-side coiled-tube heat exchanger of the present utility model can improve heat exchange efficiency, save energy and reduce energy consumption compared with the existing single-tube-side coiled-tube heat exchanger. consumption effect.

Some users also need to arrange the inlet and outlet pipe interfaces on the same side of the tube side due to the limitation of the position of the medium inlet and outlet, so as to facilitate operation, maintenance and pipeline layout. The double-tube-side coiled tube heat exchanger of the utility model can meet the needs of users. need.

In particular, it should be noted that the double-tube coiled tube heat exchanger adopts a horizontal arrangement in the embodiment of the utility model, but it is not limited thereto; of course, it can also adopt a vertical arrangement or other arrangement types according to actual working conditions .

The utility model is not limited to the above-mentioned best implementation mode, and anyone can obtain other various forms of double-tube-side coiled tube heat exchangers under the inspiration of the utility model. All equivalent changes and modifications made according to the patent scope of the utility model should belong to the scope of the utility model.

Claims (5)

1. a two-tube-pass coil pipe heat exchanger, it is characterized in that: comprise shell-side cylinder, left pipe box and right pipe box, both sides, described shell-side cylinder top are respectively equipped with shell side adapter, described shell-side cylinder two ends are respectively arranged with left tube sheet and trough of belt right tube plate, fixedly be equipped with the coiling of coiling outside core cylinder between described left tube sheet and trough of belt right tube plate to restrain, described coiling tube bank two ends are connected with right pipe box with left pipe box respectively; Described left pipe box is provided with the flange be tightly connected by fastening bolt and left tube sheet, and described right pipe box is provided with the flange be tightly connected by fastening bolt and trough of belt right tube plate; Be horizontally set with the dividing plate its inner chamber being separated into upper and lower two cavitys in described right pipe box, the septalium on described dividing plate and trough of belt right tube plate is sealed and matched, and described right pipe box top is provided with tube side upper connecting tube, and described right pipe box bottom is provided with tube side lower linking tube.

2. two-tube-pass coil pipe heat exchanger according to claim 1, it is characterized in that: the heat exchange tube hole number on described trough of belt right tube plate is distributed in the both sides up and down of septalium equably, pore position on described left tube sheet is arranged identical with the pore on trough of belt right tube plate, and described left tube sheet is without septalium.

3. two-tube-pass coil pipe heat exchanger according to claim 1, it is characterized in that: between the flange of described left pipe box and left tube plate sealing face, be provided with gasket seal, between the flange of described right pipe box and trough of belt right tube plate sealing surface, be provided with the gasket seal being with intermediate parting strips.

4. two-tube-pass coil pipe heat exchanger according to claim 1, is characterized in that: described left pipe box and right pipe box all also comprise tube side cylindrical shell and tube side end socket.

5. two-tube-pass coil pipe heat exchanger according to claim 1, is characterized in that: described shell-side cylinder bottom is also provided with blow-off pipe.